Gweithgynhyrchu yw'r diwydiant mwyaf yn y sector cynhyrchu. Mae'r sector hwn yn cynnwys mwyngloddio a chwarela, cyflenwi ynni a chyflenwi dŵr, a diwydiannau rheoli gwastraff. Gwneir defnydd helaeth o'r ystadegau hyn yn y sector preifat a'r sector cyhoeddus, yn enwedig gan Fanc Lloegr, Trysorlys y DU a'r Swyddfa Cyfrifoldeb Cyllidebol, er mwyn helpu i lunio polisïau a gwneud penderfyniadau.
The value of UK manufacturers’ product sales was £357.8 billion in 2015, a 1.3% decrease on the 2014 estimate of £362.5 billion and could be attributed to the fall in producer prices. This is the first contraction in manufacturers’ sales since the 2008 to 2009 economic downturn.
The manufacture of machinery and equipment not elsewhere classified division had the largest fall between 2014 and 2015 with £2.7 billion (9.7%) in the value of manufacturers’ sales.
A decline in the value of sales was also reported for divisions such as chemicals, food products and basic metals.
The sales by UK based manufacturers of the individual products covered by the PRODCOM inquiry. It contains the quality measures for 2013 intermediate and final estimates for 2012 and intermediate estimates of manufacturers’ sales by product, from businesses based in the UK in 2013, and final estimates for 2012.